general protection fault, probably for non-canonical address 0xdffffc000000001a: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000d0-0x00000000000000d7]
CPU: 0 PID: 380 Comm: syz-executor.3 Not tainted 6.1.134-syzkaller-1169262-g3cd01bb5bd37 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:__device_attach+0xae/0x400 drivers/base/dd.c:1014
Code: 8d 66 68 4c 89 e0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 e7 e8 74 b9 d6 fe 4d 8b 2c 24 4d 8d a5 d0 00 00 00 4c 89 e0 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 1f 03 00 00 41 0f b6 1c 24 89 de 83 e6 01
RSP: 0018:ffffc900016b7ba0 EFLAGS: 00010202
RAX: 000000000000001a RBX: dffffc0000000000 RCX: ffffffff84ee6dad
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900016b7b20
RBP: ffffc900016b7c58 R08: dffffc0000000000 R09: fffff520002d6f65
R10: fffff520002d6f65 R11: 1ffff920002d6f64 R12: 00000000000000d0
R13: 0000000000000000 R14: ffff888116c23830 R15: 0000000000000000
FS:  00007f4989dec6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff5153c6d58 CR3: 0000000121fd8000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 device_attach+0x17/0x20 drivers/base/dd.c:1081
 proc_ioctl+0x404/0x5f0 drivers/usb/core/devio.c:2365
 proc_ioctl_default+0xb9/0xf0 drivers/usb/core/devio.c:2400
 usbdev_do_ioctl drivers/usb/core/devio.c:2756 [inline]
 usbdev_ioctl+0x158a/0x1e40 drivers/usb/core/devio.c:2816
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f498907c959
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4989dec0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f498919bf80 RCX: 00007f498907c959
RDX: 0000000020000080 RSI: 00000000c0105512 RDI: 0000000000000006
RBP: 00007f49890d8c88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f498919bf80 R15: 00007ffdada3f918
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__device_attach+0xae/0x400 drivers/base/dd.c:1014
Code: 8d 66 68 4c 89 e0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 e7 e8 74 b9 d6 fe 4d 8b 2c 24 4d 8d a5 d0 00 00 00 4c 89 e0 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 1f 03 00 00 41 0f b6 1c 24 89 de 83 e6 01
RSP: 0018:ffffc900016b7ba0 EFLAGS: 00010202

RAX: 000000000000001a RBX: dffffc0000000000 RCX: ffffffff84ee6dad
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900016b7b20
RBP: ffffc900016b7c58 R08: dffffc0000000000 R09: fffff520002d6f65
R10: fffff520002d6f65 R11: 1ffff920002d6f64 R12: 00000000000000d0
R13: 0000000000000000 R14: ffff888116c23830 R15: 0000000000000000
FS:  00007f4989dec6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efdc49a0d58 CR3: 0000000121fd8000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	8d 66 68             	lea    0x68(%rsi),%esp
   3:	4c 89 e0             	mov    %r12,%rax
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
   e:	74 08                	je     0x18
  10:	4c 89 e7             	mov    %r12,%rdi
  13:	e8 74 b9 d6 fe       	call   0xfed6b98c
  18:	4d 8b 2c 24          	mov    (%r12),%r13
  1c:	4d 8d a5 d0 00 00 00 	lea    0xd0(%r13),%r12
  23:	4c 89 e0             	mov    %r12,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 04 18          	movzbl (%rax,%rbx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 1f 03 00 00    	jne    0x355
  36:	41 0f b6 1c 24       	movzbl (%r12),%ebx
  3b:	89 de                	mov    %ebx,%esi
  3d:	83 e6 01             	and    $0x1,%esi